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(__makecontext): Correctly compute alignment.

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This commit is contained in:
Andreas Jaeger 2004-05-10 14:42:28 +00:00
parent 66b3d19800
commit 9f19140a47
1 changed files with 3 additions and 5 deletions
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8
sysdeps/unix/sysv/linux/x86_64/makecontext.c
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@ -1,5 +1,5 @@
/* Create new context.
Copyright (C) 2002 Free Software Foundation, Inc.
Copyright (C) 2002, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 2002.
@ -59,10 +59,8 @@ __makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
/* Generate room on stack for parameter if needed and uc_link. */
sp = (long *) ((long) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
sp -= (argc > 6 ? argc : 0) + 1;
/* Align stack. */
sp = (long *) (((long) sp) & -16L);
/* Make space for trampoline address. */
sp -= 8;
/* Align stack and make space for trampoline address. */
sp = (long *) ((((long) sp) & -16L) - 8);
idx_uc_link = (argc > 6 ? argc : 0) + 1;